On Aug 1, 2011, at 5:40 PM, Dmitri Pal dpal@redhat.com wrote:
On 08/01/2011 05:07 PM, Hugh Brock wrote:
On Mon, Aug 01, 2011 at 04:53:31PM -0400, Todd Sanders wrote:
On 08/01/2011 03:28 PM, Hugh Brock wrote:
On Mon, Aug 01, 2011 at 09:48:20AM -0400, Bryan Kearney wrote:
On 07/29/2011 03:09 PM, Hugh Brock wrote:
Of course, it will be some time before the Katello folks can design and build the whole UI for managing all three kinds of Aeolus templates and their interactions and dependencies. However, we don't have to wait for that to happen before we can start thinking about making Conductor and Katello work together. For release 0.4.0, I would think we could get by with the following features:
- Katello provides an API that, given a user Katello knows about, will
return all the Katello system templates that user has permission to see. (Note that templates in Katello are grouped by "environment," and that a user can have permission on more than one environment, so we'll have to deal with that hierarchy in the API somehow.)
- The Aeolus team builds a UI piece in or next to Conductor will allow
the user to:
map those templates to a catalog (more about this later)
map non-Katello templates (assemblies/deployables) to a catalog. For now this could be pretty much the same mechanism that our "Suggested Deployable" UI uses now -- store a URL of a deployable to use
Another UI piece, in or next to Conductor, will allow a user to:
map a catalog to a pool
check to see if the templates in that catalog have been built into images that have been pushed to the cloud provider accounts that the pool has access to
ask the Image Factory to build and push any templates that have *not* been built in the available accounts
display the status of the build(s)
Hugh... can you map out 2 stories and a proposed set of api calls? I am thinking the following:
- As a user, I build a template and would like to have it launched
in the cloud.
Sure, yeah, good idea. Here's one:
Story 1: As a user, I define a template and would like to launch it in the cloud (subtle change of "build" to "define" here is important)
- Install Katello
- Install Aeolus and configure it so it knows how to reach Katello
- Configure Katello so it knows how to reach Aeolus
- In the Katello UI, choose an org and an environment to work in
- In the Katello UI, define a system template (please update this as
required to reflect my imperfect knowledge of Katello).
I'd rework as follows:
- Login to the Katello UI, and select an org.
- In the Katello UI, define a system template and promote into an
environment along with the required content.
- (OPTIONAL) In the Katello UI, choose a Conductor catalog to add the
template to
- OR -
- (OPTIONAL) In the Katello UI, choose an Conductor pool to launch in
(bypass catalog manipulation altogether) 7. Behind the scenes, template is built into an image, pushed, and launched.
6a. (OPTIONAL) In the Katello UI, choose a Conductor catalog to add the template to. 7a. Behind the scenes, template is built into an image **Done**
The issue with 7a is that we can't build the image until we know where to push it -- which requires we know what pool we want it to run in, which requires the user to choose a pool. So I tend to think that if you don't want to pick a pool (like in 6b), 6a is as far as you can go. Does that make sense?
6b. (OPTIONAL) In the Katello UI, choose an Conductor pool to launch in (bypass catalog manipulation altogether). 7b. Behind the scenes, template is built into an image, pushed and launched. 8b. Running instance, is automatically registered back to Katello for the given org and environment; as part of post-boot process. 9b. In the Katello UI, the system details will contain a link to the Aeolus pool that the instance is running in. **Done**
- In the Katello UI, see a link to the Aeolus pool the image is
running in
THINGS TO NOTE ABOUT THIS STORY:
- For now, I've ignored deployables, since Katello isn't going to
know anything about them this iteration. In practice, when Katello adds a template to a catalog or builds/launches it in a pool, we'll probably wrap it in empty assembly/deployable structures. Once Katello is able to manage and launch application templates (deployables), we can move the UI that lets Katello users add to catalogs or launch over to the application template section, or something like that.
- Somewhere in the chain here, something is going to have to take the
available Katello system template, which specifies a base OS, some packages, and (eventually) some configuration, and make it into instructions that the image factory can understand. Seems to me that translator piece probably belongs in the catalog manager or somewhere in the vicinity of Conductor, although I could be wrong about that.
APIs implied by this story:
Conductor provides API that will let a user read the catalogs and pools he has permission to see
Conductor provides API that will let a user add a deployable or application to a catalog
Conductor provides API that will let a permitted user launch a deployable, independently of catalogs
Conductor (may) provide a capability that will check if a deployable needs images built and go build them and push them before launch
- As a user, I am building out a catalog and launch it.
Story 2: As a user, I want to add templates to a catalog, map that catalog to a pool, and launch an entry in the catalog.
- Assume a Katello already installed, with some available templates
- Install Aeolus, tell it how to reach Katello
- In the catalog management UI, choose "Add an application." UI lists
Katello orgs/environments the user can see.
FYI...For now, Katello supports "system" templates or 1 template per system. This will obviously need to change going forward to support "application" templates.
Yeah, and for now I'm figuring we're only going to work with the one kind of Katello template that is available. But from the catalog management side, we may *call* that thing an application. Or we may not -- not completely sure.
- In the catalog management UI, choose an environment. UI lists the
templates the user can see in that environment. Choose a template to add to the catalog 5. In the catalog management UI, see a list of pools the catalog is mapped to. Choose one 6. In the pool UI, choose the new template, see option to build template for all the cloud back ends in the pool, choose that option 7. Conductor (via factory) builds images from template 8. In the pool UI, launch the new template.
- Running instance, is automatically registered back to Katello for
the given org and environment; as part of post-boot process. 10. In the Katello UI, the system details will contain a link to the Aeolus pool that the instance is running in.
Yeah, 9-10 are good additions.
--H
I am sorry may be it was described somewhere but it is not clear to me what is the hierarchy from user point of view regarding a catalog. Is it:
- There are catalogs in the system
- Catalogs contain predefined deployables
- Some deployables are just templates as they have not been associated
with the pools and environments
- Other deployables have been already associated with a specific
environment and thus catalog has already a prebuilt set of images for each pool the deployable was tagged to.
This view dictates the following user workflow: Catalogs -> Catalog -> Deployble -> Deployable for a specific pool
Alternatively:
- There are pools in the system
- Each pool/env can have several catalogs
- Each catalog contains already built images (deployables) for a
specific pool
This view dictates the following user workflow: Pools -> Pool -> Catalogs -> Catalog -> Deployble
There might be some other (third or fourth) workflow that is implied in the user stories above but I am not clear which one exactly.
Can we start with a definition of Catalog?
Catalog is the collection of <what?> that are <what?>...
The first mail in the thread has a pretty good description of what catalogs are and what features they need to have for this iteration.
In short:
* A catalog is an admin-defined collection of deployables, which in the Katello world are also known as application templates
* A catalog can be added to 1 or more pools in Conductor by an administrator
* If a catalog has been added to a pool, then users with permissions to launch applications in that pool have the applications in the catalog available to them to launch.
Andy can expand further if need be...
Take care, --Hugh
-- Thank you, Dmitri Pal
Sr. Engineering Manager IPA project, Red Hat Inc.
Looking to carve out IT costs? www.redhat.com/carveoutcosts/
aeolus-devel mailing list aeolus-devel@lists.fedorahosted.org https://fedorahosted.org/mailman/listinfo/aeolus-devel